期刊
PHYSICAL REVIEW A
卷 95, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.95.041604
关键词
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资金
- Okinawa Institute of Science and Technology Graduate University
- JSPS KAKENHI [16K05461]
- Thousand Young Talent Program of China
- Eastern Scholar Program of Shanghai
- Grants-in-Aid for Scientific Research [16K05461] Funding Source: KAKEN
We study the phase diagram of a Rashba spin-orbit-coupled Bose-Einstein condensate confined in a two-dimensional toroidal trap. In the immiscible regime we find an azimuthally periodic density distribution, with the periodicity highly tunable as a function of the spin-orbit-coupling strength and which favors an odd number of petals in each component. This allows for a wide range of states that can be created. We further show that in the miscible regime, both components possess states with persistent flows with a unit winding number difference between them and with the absolute values of these winding numbers depending on the spin-orbitcoupling strength. All features of the odd-petal and the persistent flow states can be explained using a simple but effective model.
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